Prediction of contributing areas for diffuse herbicide losses in the Greifensee catchment
Despite the introduction of agro-ecological measures in the 90s, the herbicide losses to surface waters have been hardly reduced. Results from previous projects revealed that losses could be substantially reduced by avoiding applications to hydrologically contributing areas. This project aimed at predicting such areas based on available spatial data and simulation tools. The predictions were tested using the spatial loss data obtained from earlier experiments. Reasonable predictions possible if the connectivity between fields and stream were properly taken into consideration.
Prediction of Critical Source Areas (CSA) in a small agricultural catchment (Frey et al., 2008)
Contractor
Syngenta
Status
terminated
Publications
Frey, M., Stamm, C., and Reichert, P. (2007). Prediction of contributing areas for diffuse herbicide losses to surface waters and analysis of its uncertainties. In "XIII Symposium Pesticide Chemistry - Environmental Fate and Ecological Effects of Pesticides" (A. A. M. Del Re, E. Capri, G. Fragoulis and M. Trevisan, eds.), pp. 536 - 543. La Goliardica Pavese, Piacenza.
Frey, M., 2009. Prediction of critical source areas for diffuse herbicide losses to surface waters. PhD Thesis 18291, Swiss Federal Institute of Technology: Zürich. p. 129 pp.
Frey, M., Dietzel, A., Schneider, M., Reichert, P., and Stamm, C. (2009). Predicting critical source areas for diffuse herbicide losses to surface waters: role of connectivity and boundary conditions. Journal of Hydrology, 365: 23 - 36.